Single Crystal Growth and Magnetic Properties of RRhIn5 Compounds ( R: Rare Earths ) Nguyen Van Hieu Title Abstract Contents Chapter_1: Introduction. Chapter_2: Magnetic Properties of Rare Earth Compounds. Chapter_3: Motivation of the Present Study. Chapter_4: Single Crystal Growth and Measurement Methods. Chapter_5: Experimental Results and Discussion. Chapter_6: Conclusion. References Publication List Contents 1 Introduction 4 2 Magnetic Properties of Rare Earth Compounds 6 2.1 Magnetic properties of rare earth ions and metals . . . . . . . . . . . . . 6 2.2 Crystalline electric field (CEF) effect . . . . . . . . . . . . . . . . . . . . 14 2.3 Kondo effect and heavy fermions . . . . . . . . . . . . . . . . . . . . . . 24 2.4 Magnetic properties of RIn3 and RRhIn5 compounds . . . . . . . . . . . 27 3 Motivation of the Present Study 43 4 Single Crystal Growth and Measurement Methods 44 4.1 Single crystal growth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 4.2 Measurement methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 4.2.1 Electrical resistivity . . . . . . . . . . . . . . . . . . . . . . . . . . 51 4.2.2 Specific heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 4.2.3 Magnetic susceptibility and magnetization . . . . . . . . . . . . . 55 4.2.4 High field magnetization . . . . . . . . . . . . . . . . . . . . . . . 57 4.2.5 de Haas-van Alphen effect . . . . . . . . . . . . . . . . . . . . . . 59 4.2.6 Neutron scattering . . . . . . . . . . . . . . . . . . . . . . . . . . 66 5 Experimental Results and Discussion 73 5.1 Magnetic properties and CEF scheme in RRhIn5 . . . . . . . . . . . . . . 73 5.2 Fermi surface and magnetic properties of PrTIn5 (T: Co, Rh and Ir) . . . 98 5.3 Unique magnetic properties of RRhIn5 (R: Nd, Tb, Dy, Ho) . . . . . . . 120 5.4 Neutron scattering study in RRhIn5 (R: Nd, Dy , Ho) . . . . . . . . . . . 137 6 Conclusion 155 Acknowledgments 156 References 158 Publication List 165